发明名称 |
POLYISOCYANURATE RIGID FOAMS |
摘要 |
A method for the preparation of a polyisocyanurate foam which comprises reacting a polymethylene polyphenylene polyisocyanate composition with a polyfunctional active hydrogen compound in the presence of a trimerisation catalyst and an inert volatile blowing agent, the isocyanate index being at least 750 and the weight of polyisocyanate composition being at least 80 % of the combined weights of the polyisocyanate composition and active hydrogen compound. |
申请公布号 |
ZA8803736(B) |
申请公布日期 |
1989.02.22 |
申请号 |
ZA19880003736 |
申请日期 |
1988.05.25 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC. |
发明人 |
BEREND ELING;COLIN ROBERT TWEEDALE |
分类号 |
C08G18/02;C08G18/09;C08G18/16;C08G18/22;C08G18/76;C08G101/00 |
主分类号 |
C08G18/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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